Job Mobility vs. Job Loyalty: Which Do You Choose?

As a millennial, I know that we are regarded as an age group and a professional group that is very unpredictable when it comes to job stability.  I read an article on XoNecole that talked about some reasons why jobs look at your job hopping as an advantage as far as your increased job skill set, networking ability and even stated that those who move around to different jobs renegotiate higher salaries (heeey!).
While I agree that all of those things are great benefits to being mobile in the workforce, I may possibly have more of an old school approach to my job stability and career mobility, which is odd for me being a millennial in this job market.  I have always been taught that a lot of movement in the workforce indicates a lack of commitment, and it does give employers a bit of a side-eye when looking at a resume.  I know firsthand when looking at resumes with my fellow interview panel, and seeing a few eyebrows go up when you see the constant jump from employer to employer.  Because of the constant turnover in my job, one thing we focus on is someone who is going to be dedicated and want to build a career with this job (which is something we try to work towards with people, if they stay around of course).  I also understand that in my job it’s difficult, because of the amount of stress it causes which is why the hiring process is one we take seriously.  We tend to attract a younger demographic of applicants, which puts us at crossroads when decisions are made as to if we are going to hire a person who we think is going to be loyal to the job and stick around for the professional development and make this a career, or are they only going to stay long enough to get through training, give us a few months and then head out the door.  It’s a risky move, and now that I am in a management position, I see the idea from a totally different perspective and I can understand why both sides; job mobility vs. job loyalty can both have it’s benefits and disadvantages.
I have seen others who have stayed at a job for years, decades even, and suddenly make a career change and it also raise a few eyebrows and question employers as to why they made a move after being vested in a career for so long.  It makes you wonder if there was something that happened at that job that was not so favorable of that employee, or if maybe they simply just wanted a change in career.  There are so many things that run through your mind when thinking of either situation, that you never know which way to turn, or what way to go!
I say all this to say while I agree with some of the points in the article, I also feel that job-hopping still has its disadvantages, and some of these companies are not and may not ever be hip to the idea of having someone on their team that is only there to gain some new job skills and move on to the next position.  If you are into the “job-hopping” perspective in your career advancement, my only advice is to be advised that some of these companies are not willing to hire a person who’s experience is very sporadic and does not show a bit of longevity with a company.  You would really have to sell yourself on how loyal you are willing to be to an employer to make them take a chance on you without fear that you are only there to network, get what you need and move on to the next.